duffymahoney

Duffy's 1/71 Series 1 240z build

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    Well it runs, but terrible.  I have a massive vac leak, either from my balance bar not sealing or maybe a throttle body wasn't bolted down correctly.  Even with throttle plates in the full closed position it runs happily at 900 rpms. So it's getting a ton of air from somewhere.  

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    On 3/30/2020 at 7:21 PM, duffymahoney said:

    Well the 80s bmw iac is awesome, smaller and nice looking. Let’s no air or minimal amount by when physically closed Now to find out what pin is positive. 

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    Can you share a part # or specific BMW make/model/year?

     

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    Well we finally got a block that passed sonic testing. It took 4 to get one that can handle the 88.5 pistons. N42 for the win! Thanks Andrew Kazanis! It’s going to be a sweet motor.

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    Engine builder is removing the casting flash and de-burring the block today. Getting ready for Glyptol coating. Pretty neat. 

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    Edited by duffymahoney

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    3.2L engine parts arrived from Rebello today! 

    JE Pistons, Eagle rods and king race bearings. Rod bearing clearances are spot on. Marine Crank did a fanstatic machining job on my extra long stroke LD crank.

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    So what is in the Rebello 3.2 kit?

    What do you have to provide?

    What head will you pair with it?

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    1 hour ago, Patcon said:

    So what is in the Rebello 3.2 kit?

    What do you have to provide?

    What head will you pair with it?

    It requires you have a diesel crank to offset grind and a block that will go to at least 89mm - I believe.

    Thats the way mine is anyway . You can pair is with any head with any compression - that’s a matter of preference . I think he can make a 3.0 out of any L28 block and crank . To get the extra .2 required a longer stroke . 
    I sent my diesel crankshaft and a N42 block and $$$ and I got back all the ingredients to put one together . Rebello preps  the block and crank - custom pistons and all bearings . 

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    I have the LD crank and N42 block. What’s a ball park figure for Rebello’s parts and labor?

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    7 hours ago, Yarb said:

    I have the LD crank and N42 block. What’s a ball park figure for Rebello’s parts and labor?

    I think the kit was 2600 approx

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    That included his machine work?

     

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    On 5/13/2020 at 12:07 AM, duffymahoney said:

    3.2L engine parts arrived from Rebello today! 

    JE Pistons, Eagle rods and king race bearings. Rod bearing clearances are spot on. Marine Crank did a fanstatic machining job on my extra long stroke LD crank.

    9D214B2C-1565-4DDF-B434-49009ACFD7C8.jpeg

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    7C22A944-680B-4A79-80CC-8B2E395B27FD.jpeg

    Your pistons look just like mine with the dish . What CR are you shooting for and what CC chamber in the head ?

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    2 hours ago, Yarb said:

    That included his machine work?

     

    No. I think a fully built Rebello motors are 8-20k. 
     

    I didn’t get a Rebello kit. Just parts we needed. 
     

    10:1 is the goal. I will only use ethanol free premium. 

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    15 hours ago, Patcon said:

    So what is in the Rebello 3.2 kit?

    What do you have to provide?

    What head will you pair with it?


    From Rebello 

    I got titanium valve retainers, pistons, rods, bearings etc...

    I will be using a ported and bigger valve E31.

    Machine work will all be done locally. 

    Crank repair and stroke was done by Marine Crankshaft.  

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    So not using the LD28 block?

    That goes to 3.4L, doesn't it. I believe it requires a custom crank though

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    5 minutes ago, Patcon said:

    So not using the LD28 block?

    That goes to 3.4L, doesn't it. I believe it requires a custom crank though

    No. Just a N42 block bored. I’m not chasing a ton of hp. The 3.4+ is a lot of work and $. 
     

    I actually think I will be at at 3.16 or something. But that sounds dumb. So 3.2L 

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    I've got an LD28 block and crank build on the go. At 84x90 (stroke/bore) It's still only 3.2. The Rebello 3.35 is an 89mm custom Crower crank.

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    Duffy you've done some great work to this S1 240z! I've been lurking for a while. Nice to see some chronological history of your build instead of just Facebook.

    - Jeremy Wilbur

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    17 hours ago, 73str86 said:

    Duffy you've done some great work to this S1 240z! I've been lurking for a while. Nice to see some chronological history of your build instead of just Facebook.

    - Jeremy Wilbur

    Thank you! Trying to make it a blast to drive, tinker, but also I can go back to bone stock fairly easily.  

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